Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 129 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) yeast
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) neither of them (c) the sugar cube (d) powdered sugar
4. 4.🔍 Which is the odd one out? (a) a sugar cube (b) a plastic ruler (c) a flower stem (d) a paper towel
5. 5.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) pour it on the floor (d) throw the glass
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the slope of the string (c) how big we blow it (d) the same string
7. 7.True or false: a comb is needed for the dissolving test. (a) True (b) False
8. 8.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🥄 Does a big sugar cube dissolve faster or slower? (a) slower (b) faster
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
11. 11.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of the layers is the one thing we change. (a) False (b) True
12. 12.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) two chairs (d) a magnet
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) safety scissors (c) a paper clip (d) a balloon
15. 15.🧺 Do we need a magnet for the water cycle bowl? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a towel (d) a sink or a bucket
17. 17.🔍 Which is the odd one out? (a) a cork (b) an ice cube (c) a piece of thermocol (d) a metal key
18. 18.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same glass (b) the order of pouring (c) the order of the layers
20. 20.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a few hours of waiting (c) food colour (d) a glass of water
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True
22. 22.🥄 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
24. 24.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a balloon rocket (c) a fridge magnet (d) a sundial
25. 25.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
26. 26.🔮 Predict: you use a rough, thick string instead of a smooth one. (a) it goes faster (b) more friction, less far (c) no change at all (d) less friction
27. 27.🧺 Which of these is not needed for the water cycle bowl? (a) a battery cell (b) sunlight (c) a small cup (d) ice cubes
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a balloon (d) a stiff postcard
29. 29.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when it turns blue (c) it never stops (d) when the air runs out
30. 30.🥄 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a ruler (c) yeast (d) a strip of paper
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a sunny window (d) a clear glass of water
33. 33.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.True or false: turmeric powder is not needed for the coloured flower experiment. (a) False (b) True
35. 35.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed
37. 37.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
39. 39.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) a battery cell

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